use system icons whenever possible.

[shrinivas17081997]

i always find oxygen icon theme ugly to some extent.
it would be good if you make meteo-qt follow the system theme & icons.
and fallback to oxygen icon when no icons are found.

[dglent]

You mean to choose the weather status icons of the default icons set ?
Does every iconset has its own weather icons every time ?

I thought to add as an option to choose between the openweathermap and oxygen icons:
http://www.iconarchive.com/show/oxygen-icons-by-oxygen-icons.org.18.html

i saw also that openweathermap has a new iconset:
https://openweathermap.org/weather-conditions

papirus icon theme

http://www.iconarchive.com/show/papirus-apps-icons-by-papirus-team/weather-icon.html

breeze icon theme also has weather icons

so most icon themes will have them
if some icon theme doesn't then
use oxygen as fallback

[dglent]

Can you check the above commit ?
Adds an option in settings to use the System theme icons

[dglent]

Oxygen icons from system

[dglent]

Done